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Portola Enters into Clinical Collaboration Agreement with Daiichi Sankyo

Published: Thursday, July 10, 2014
Last Updated: Thursday, July 10, 2014
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Phase 3 collaboration agreements in place with all direct Factor Xa inhibitor manufacturers while Portola retains all rights to andexanet alfa.

Portola Pharmaceuticals has announced that it has entered into a second clinical collaboration agreement with Daiichi Sankyo to study andexanet alfa, Portola's investigational Factor Xa inhibitor antidote, in Phase 3 registration studies with Daiichi Sankyo's Factor Xa inhibitor edoxaban.

Portola's original collaboration agreement with Daiichi Sankyo, announced in June 2013, covered the conduct of a Phase 2 proof-of-concept study, for which results are anticipated later this year. The Phase 3 edoxaban studies, known as ANNEXA™- E (Andexanet Alfa a Novel Antidote to the Anticoagulant Effects of fXA Inhibitors - Edoxaban), are expected to start in 2015.

Under this non-exclusive collaboration agreement, Portola will receive an upfront payment and is eligible to receive additional development and regulatory milestone payments. Portola retains full, worldwide commercial rights to andexanet alfa, for which Portola is pursuing an Accelerated Approval pathway.

"We have now established Phase 3 clinical collaboration agreements with all of the manufacturers of Factor Xa inhibitors. This, combined with the FDA's designation of andexanet alfa as a breakthrough therapy, underscores the significant need for an antidote for the millions of patients currently being treated with these novel anticoagulants," said William Lis, chief executive officer. "We are pursuing an accelerated approval pathway for andexanet alfa in order to bring this novel therapy to market as quickly as possible for the benefit of patients."

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